1. | Digital security and resilience in critical infrastructure and essential services [documento eletrónico] / Organisation for Economic co-Operation and DevelopmentData Publicação: 2019 Tema: Tecnologias da Informação (TIs) | ||
2. | The operators and their future [documento eletrónico] : the state of play and emerging business models / Organisation for Economic co-Operation and DevelopmentData Publicação: 2019 Tema: Comunicações Eletrónicas |